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History of Probability. Objectives. Determine what fraction of a deck of cards a certain set of cards describes. Determine how many of a certain type of card is in a deck. Determine the number of times two head, two tails, and one head and one tail will come up when two coins are tossed.
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Objectives • Determine what fraction of a deck of cards a certain set of cards describes. • Determine how many of a certain type of card is in a deck. • Determine the number of times two head, two tails, and one head and one tail will come up when two coins are tossed.
Vocabulary • theoretical probability • experimental probability
How many spades are in a standard deck of cards? What fraction of a deck is spades?
How many queens are in a standard deck of card? What fraction of a deck is queens?
If you flip a pair of coins 20 times, approximately how many times do you think a pair of tails will come up? Flip a pair of coins 20 times. Did a pair of tails come up as many times as you approximated?